A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5910-01-428-7105
NSN 6135-00-686-4777
NSN 5999-00-712-8518
NSN 6620-01-210-9002
NSN 6110-01-416-4959
NSN 5905-01-521-0961
NSN 6240-01-468-3109
NSN 5996-00-578-9092
NSN 6110-01-004-9870
NSN 5960-01-067-1448
NSN 5920-01-116-1789
NSN 7035-00-140-0474